This is clearly anti-competetive and, in my opinion, illegal in at least the America's and Europe.
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RT @Adam_Hosker
Today I Learned you can not advertise on @GoogleAds if you use @googleanalytics competitors like @matomo_org .

I only use Matomo it for simpler GDPR.

Does @google have the same policy for @usefathom and @PlausibleHQ
https://twitter.com/Adam_Hosker/status/1400748390355456002